Linear mixing rule in screened binary ionic mixtures

Abstract

We examine the validity of the empirical ‘‘linear mixing rule’’ for the determination of the thermodynamic properties of screened binary ionic mixtures interacting with effective density- and temperature-dependent screened Coulomb potentials. Comparison with hypernetted-chain calculations reveals generally good agreement and further verifies the reliability of the linear law, even when the response of the finite-temperature electron gas is taken into account.